dun-na nah nah na-na
They say it's your birthday
dun-na nah nah na-na
It's my birthday too, yeah!
dun-na nah nah na-na
They say it's your bithday
dun-na nah nah na-na
We're gonna have a good time!
dun-na nah nah na-na
They say it's your birthday
dun-na nah nah na-na
Happy Birthday to ya!